as an argument a function that will retrieve an element of the pointer
arrays in user space. This allows COMPAT_NETBSD32 to share the code for
the emulated version of execve(2), and fixes various issues that came from
the slow drift between the two implementations.
Note: when splitting up a syscall function, I'll use two different ways
of naming the resulting helper function. If it stills does
copyin/out operations, it will be named <syscall>1(). If it does
not (as it was the case for get/setitimer), it will be named
do<syscall>.
relevant code with the COMPAT_NETBSD32 version, and make the latter use
the new functions.
This fixes netbsd32_setitimer() which had drifted from the native syscall
and did not work properly anymore.
so, it introduces breakage because a lot of applications make assumptions
from its value. It's especially bad in the sparc64 case, where 64-bits
instructions can be used in 32-bits addressing mode. However, there are
other means to know the capabilities of the CPU.
- use the code field directly, instead of redoing the logic.
- XXX: the status field must be wrong. I think that the _WSTATUS()
should not be used directly.
The __UNCONST macro is now used only where necessary and the RW macros
are gone. Most of the changes here are consumers of the
sysctl_createv(9) interface that now takes a pair of const pointers
which used not to be.
i/o is done. Instead, pass an opaque cookie which is then passed to a
new routine, coredump_write, which does the actual i/o. This allows the
method of doing i/o to change without affecting any future MD code.
Also, make netbsd32_core.c [re]use core_netbsd.c (in a similar manner that
core_elf64.c uses core_elf32.c) and eliminate that code duplication.
cpu_coredump{,32} is now called twice, first with a NULL iocookie to fill
the core structure and a second to actually write md parts of the coredump.
All i/o is nolonger random access and is suitable for shipping over a stream.
but amd64, it just returns 0, doing nothing.
For amd64, it implements vsyscalls through cheating: if the faulting
address is in the vsyscall area (which is statically known on Linux/amd64),
and the intruction pointer is too, it must have been a vsyscall. In that
case, retrieve the return address from the user stack, fix up %rip and
%rsp, and just execute the normal system call. It will return as if
the vsyscall has been executed.
New features:
- Add a veriexec_report() routine to make most reporting consistent and
remove some common code.
- Add 'strict' mode that controls how veriexec behaves.
- Add sysctl knobs:
o kern.veriexec.verbose controls verbosity levels. Value: 0, 1.
o kern.veriexec.strict controls strict level. Values: 0, 1, 2. See
documentation in sysctl(3) for details.
o kern.veriexec.algorithms returns a string with a space separated
list of supported hashing algorithms in veriexec.
- Updated documentation in man pages for sysctl(3) and sysctl(8).
Bug fixes:
- veriexec_removechk(): Code cleanup + handle FINGERPRINT_NOTEVAL
correctly.
- exec_script(): Don't pass 0 as flag when executing a script; use the
defined VERIEXEC_INDIRECT - which is 1. Makes indirect execution
enforcement work.
- Fix some printing formats and types..
- don't use managed mappings/backing objects for wired memory allocations.
save some resources like pv_entry. also fix (most of) PR/27030.
- simplify kernel memory management API.
- simplify pmap bootstrap of some ports.
- some related cleanups.
* For sparc64 and amd64, define *SIZ32 VM constants.
* Add a new function pointer to struct emul, pointing at a function
that will return the default VM map address. The default function
is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS
macro. This gives emulations control over the default map address,
and allows things to be mapped at the right address (in 32bit range)
for COMPAT_NETBSD32.
* Add code to adjust the data and stack limits when a COMPAT_NETBSD32
or COMPAT_SVR4_32 binary is executed.
* Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr
instead (emulations might have set it differently)
* Since this changes struct emul, bump kernel version to 3.99.2
Tested on amd64, compile-tested on sparc64.
OID 0. Only OID 0.3 is implemented for now, it 0.3 is the equivalent of
NetBSD's sysctlgetmibinfo().
This includes a new sysctl kern.osreldate with the value __NetBSD_Version__
for kernels with COMPAT_FREEBSD.
Both of these are used by 3ware's FreeBSD tw_cli, which seems to work now.
of the generic (NetBSD specific) sendsig().
We can only work with ...sigcontext for now anyway; the
versioning stuff in sendsig() isn't helpful for osf1 emul.
instead of the compat16_ thing.
This saves 2 pointless copyout/copyin cycles to/from
the "stackgap" buffer, and it gets us a step closer
to a COMPAT_OSF! which works w/o COMPAT_16.
This still doesn't support SA_SIGINFO because the old
COMPAT_16 signal trampoline is used.
1. make fileops const
2. add 2 new negative errno's to `officially' support the cloning hack:
- EDUPFD (used to overload ENODEV)
- EMOVEFD (used to overload ENXIO)
3. Created an fdclone() function to encapsulate the operations needed for
EMOVEFD, and made all cloners use it.
4. Centralize the local noop/badop fileops functions to:
fnullop_fcntl, fnullop_poll, fnullop_kqfilter, fbadop_stat
do { ... } while(/*CONSTCOND*/0)
so that they can be used unadorned in if/else blocks, etc. This means
that you now *have* to put a ; at the end of the "call" to these
macros.
